Caterpillar Engine 3304

Engine Crankcase (N. A. Engine)-Change Oil and filter

Change oil, filter and clean breather. See Item (13) for details.

The primary fuel filter should be cleaned and the final fuel filter element replaced every 500 service hours of operation or when the fuel gauge registers "OUT" with the engine running.

Refer to "Fuel System" in "When Required" section for procedure to change the fuel filters.

Sign off on the 500 Hourly Engine Maintenance

1. Remove the retaining wing nut from the top of the dust collector cup.

2. Remove and clean the dust collector cup.

3. Install the dust collector cup.

Batteries-Check Electrolyte Level

WARNING: Do not smoke when observing battery electrolyte level. Batteries give off fumes that can explode.

WARNING: Electrolyte is an acid and can cause personal injury if it contacts skin or eyes.

1. Clean the tops of the batteries. Keep the terminals clean and covered with a light coat of grease.

2. Remove all fill caps. Observe the electrolyte level.

1. Measure oil level. Oil should be between the FULL and ADD marks on the "Running" side of the dipstick.

Inspect the air cleaner indicator. If the red piston is locked in the raised position, service the air cleaner.

CAUTION: The engine should never be allowed to run with the water level in the element more than 1/2 full or engine damage may result.

WARNING: At Operating Temperature, engine coolant is hot and under pressure. Steam can cause personal injury.

CAUTION: If the engine is to be stored in, or shipped to, an area with below freezing temperatures, the cooling system must either be protected to the lowest expected ambient temperature, or drained completely.

Never add coolant to an overheated engine, allow engine to cool first.

Do not use Caterpillar Cooling System Conditioner or Coolant Conditioner Elements with Dowtherm 209 Full-Fill coolant.

Loosen radiator cap slowly to release pressure and remove filler cap.

Remove the engine block drain plug.

WARNING: Use all cleaning solutions with care.

Install drain plugs. Fill system with a commercially available cleaning solution or 1 kilogram (2 lb.) Sodium Bisulfate (NaHSO.) per 40 liters (10 U.S. gallons) water.

If valve clearance is within ± .003 inch (0.07 mm) of the clearance given, adjustment is not required. If clearance is not within these limits, adjust the valves.

Adjust valves with the engine stopped and cold.

2. Clean the base of the valve cover to prevent dirt from getting into valve mechanism.

4. Remove the flywheel housing timing plug.

A flywheel Engine Turning Tool 5P7307, is available from your Caterpillar dealer. Consult your Caterpillar dealer for proper instructions for use of the tool.